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在单个和虫共感染的小鼠中,Plasmodium yoelii的实验进化

Aloïs Dusuel^1,2, Luc Bourbon³, Emma Groetz^1,2

¹CTM - Center for Translational and Molecular Medicine, INSERM UMR 1231, Université Bourgogne Europe, 21000, Dijon, France.

Malaria journal

|December 26, 2025

概括

同时感染Heligmosomoides polygyrus (Hp) 并没有显著改变Plasmodium yoelii (Py) 的毒性. 然而,Py很快适应了单一或共同感染的环境,当环境不匹配时,复制速度较慢.

科学领域:

寄生虫学的寄生虫学
进化生物学进化生物学
传染病的动态传染病的动态.

背景情况:

同感染可以影响寄生虫的特征,如感染动态,疾病严重程度和健康状况.
对共感染宿主中的寄生虫适应性的实验研究是有限的.

研究的目的:

调查与Hp的共感染是否会影响Plasmodium yoelii (Py) 的感染动态和毒性.
了解Py如何适应单感染 (SI) 和共感染 (COI) 主体环境.

主要方法:

在SI或COI小鼠中使用Py序列传递的实验进化.
与祖先人口相比,进化Py线的感染动态和毒性进行比较.
在匹配和不匹配的主机环境中对Py复制的评估.

主要成果:

在SI和COI线路中,Py的连续传递增加了寄生虫和毒性.
在SI和COI线之间没有观察到复制率或毒性方面的显著差异.
进化的Py线条表现出宿主耐受性降低.
在共感染中演变的Py线在单个感染试验 (不匹配的环境) 中表现出较慢的早期复制.

结论:

杆菌很快适应单一和共感染环境.
没有发现SI和COI线之间的毒性差异的有力证据,可能是由于毒性成本.
通过在不匹配的环境中改变的复制率,Py展示了适应潜力.

关键词:

这种动物叫Heligmosomoides polygyrus.青杆菌的叶力青杆菌的叶力硬币感染硬币感染不匹配的环境不匹配的环境类动物 (Nematodes) 是一种有机动物.寄生虫的适应寄生虫的适应病毒性病毒性

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